/*

Copyright (C) 2019-2020 The Octave Project Developers

See the file COPYRIGHT.md in the top-level directory of this distribution
or <https://octave.org/COPYRIGHT.html/>.


This file is part of Octave.

Octave is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Octave is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING.  If not, see
<https://www.gnu.org/licenses/>.

*/

#if ! defined (oct_process_h)
#define oct_process_h 1

#include "octave-config.h"

#include <string>

namespace octave
{
  OCTINTERP_API
  class
  process_execution_result
  {
  public:

    process_execution_result (void)
      : m_status (-1), m_err_msg (), m_exit_status (-1), m_stdout_output ()
    { }

    process_execution_result (int status, int exit_status,
                              const std::string& stdout_output,
                              const std::string& err_msg)
      : m_status (status), m_err_msg (err_msg), m_exit_status (exit_status),
        m_stdout_output (stdout_output)
    { }

    static process_execution_result
    of_success (int exit_status, const std::string& stdout_output);

    static process_execution_result
    of_error (int status, const std::string& err_msg);

    int status (void) const { return m_status; }

    int exit_status (void) const { return m_exit_status; }

    std::string err_msg (void) const { return m_err_msg; }

    std::string stdout_output (void) const { return m_stdout_output; }

  private:

    // Launch status of the process, 0 for success, nonzero for error.
    int m_status;

    // Error message if executing command failed.
    std::string m_err_msg;

    // Exit status of the process.
    int m_exit_status;

    // Collected stdout output of the process.
    std::string m_stdout_output;
  };

  extern OCTINTERP_API process_execution_result
  run_command_and_return_output (const std::string& cmd_str);
}

#endif